APA (7th ed.) Citation
Riley, J. H., Smith, H. M., & Abbott, W. L. (1938). Birds from Siam and the Malay Peninsula in the United States National Museum, collected by Drs. Hugh M. Smith and William L. Abbott.
Chicago Style (17th ed.) Citation
Riley, J. H., Hugh M. Smith, and William L. Abbott. Birds from Siam and the Malay Peninsula in the United States National Museum, Collected by Drs. Hugh M. Smith and William L. Abbott. Washington, 1938.
MLA (9th ed.) Citation
Riley, J. H., et al. Birds from Siam and the Malay Peninsula in the United States National Museum, Collected by Drs. Hugh M. Smith and William L. Abbott. 1938.
Warning: These citations may not always be 100% accurate.